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Accumulated Other Comprehensive Income (Loss)
 12 Months Ended
Dec. 31, 2013
Accumulated Other Comprehensive Income (Loss) [Abstract]  
Comprehensive Income (Loss) Note [Text Block]
Accumulated Other Comprehensive Income (Loss)
Other comprehensive loss includes transactions recorded in stockholders' equity during the year, excluding net income and transactions with stockholders. In February 2013, the FASB issued ASU 2013-02, Reporting of Amounts Reclassified Out of Accumulated Other Comprehensive Income. The standard requires that companies present, either parenthetically on the face of the financial statements or in a single note, the effect of significant amounts reclassified from each component of accumulated other comprehensive income and the income statement line items affected by the reclassification. The Company adopted the provisions of the new guidance in the first quarter of 2013.
The following items are included in accumulated other comprehensive income (loss):
 
 
 
 
Pension,
 
 
 
 
 
 
 
 
Postretirement
 
 
 
 
 
 
 
 
and Other
 
 
 
Accumulated
 
 
 
 
Post-
 
 
 
Other
 
 
Derivative
 
Employment
 
Available-
 
Comprehensive
 
 
Instruments
 
Benefits
 
for-Sale Securities
 
Income (Loss)
 
 
(In thousands)
Balance at
January 1, 2011
$
(4,729
)
 
$
(4,676
)
 
$
1,455

 
$
(7,950
)
Unrealized gains (losses)
4,320

 
(14,528
)
 
(1,924
)
 
(12,132
)
Amounts reclassified from accumulated other comprehensive income (loss)
2,653

 
918

 
4

 
3,575

Balance at
December 31, 2012
2,244

 
(18,286
)
 
(465
)
 
(16,507
)
Unrealized gains
168

 
48,482

 
5,935

 
54,585

Amounts reclassified from accumulated other comprehensive income (loss)
(1,847
)
 
916

 
545

 
(386
)
Balance at
December 31, 2013
$
565

 
$
31,112

 
$
6,015

 
$
37,692


 
The following amounts were reclassified out of accumulated other comprehensive income (loss) during the year ended December 31, 2013:

Details about accumulated other
 
 
Reclassifications
 
Line Item in the Consolidated
comprehensive income components
 
 
(in thousands)
 
Statement of Operations
 
 
 
 
 
Derivative instruments
 
 
$
2,886

 
Revenues
 
 
 
(1,039
)
 
Benefit from income taxes
 
 
 
$
1,847

 
Net of tax
 
 
 
 
 
 
Pension, postretirement and other post-employment benefits
 
 
Amortization of prior service credits
 
 
$
13,705

1 
 
Amortization of actuarial gains (losses), net
 
 
(15,136
)
1 
 
 
 
 
(1,431
)
 
Total before tax
 
 
 
515

 
Benefit from income taxes
 
 
 
$
(916
)
 
Net of tax
 
 
 
 
 
 
Available-for-sale securities
 
 
$
(852
)
2 
Interest and investment income
 
 
 
307

 
Benefit from income taxes
 
 
 
$
(545
)
 
Net of tax
1 Production-related benefits and workers' compensation costs are included in costs to produce coal. See Note 19, "Workers' Compensation Expense" and Note 20 "Employee Benefit Plans" for more information about pension, postretirement and postemployment benefit costs.
2 The gains and losses on sales of available-for-sale-securities are determined on a specific identification basis.